Improvement in printing-presses



2 Sheets-Sheet 1.

M. GALLY. PRINTING PRESS.

Patented May 2 Than 2 Sheets-Sheet 2.

M. GALLY. PRINTING PRESS.

No. 114,285. Patented May 2, 1871.

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$hii5 MERRITT GAIIYJLY, OF ROCHESTER, NEW YORK.

Letters Patent No. 114,285, dated May 2; 1871.

IMPRDVEMENT IN PRlNTlNG-PRESSES.

The Schedule referred to in. these Letters Patent and making part a! the same.

I, MERBITT GALLY, of Rochester, in Monroe county and State of New York, have invented certain Irnprovements in Printing-Presses, of which the following is a specification.

The first part of my invention consists in such a construction and arrangement of the tympan of a printing-press as to allow such tympan to be used as a fly for piling the sheets after the impression has been made upon them.

The second part of my invention consists in? the construction and use of a crank in combination with and for the purpose of working the clamp which holds the chase in place against the bed 'of the press.

In the accompanying drawing- I Figure 1 is a side elevation ,of a press containing the above-mentioned improvements.

Figure 3 is a perspective of the platen and sheetpiling tympan, together with the table upon which the sheets are piled.

Figure 6 is a section of the lied, with chase-clamp, enlarged.

Figure 7 is a transverse section of chase-clamp with sition the tympan J, being pivoted at B, is caused to vibrate through the are shown ihy the dotted lines un til it places theprinted sheet upon the pile on the table L.

The tympan then returns to its former position to receive another sheet to be printed, thus performing two distinct ofiices, first acting as'a common tympan, then as a piling-fly.

This tympan may be vibrated by means of any convenient attachment with the working machinery of the press.

' I have thus combined the common tympan and piling-fly in one simpledevice, which acts without the aid ofta'pes,rolling-sl1eets,helts, or nippers, and may be used in printing and piling either damp or dry sheets.

I hold the chase d in position against the bed by the clamp c, which is pivoted at c.

lhis clamp is flanged or slotted, and is worked by means of a crank-pin, g.

The shaft of the crank projects from its bearing, and is squared to. receive a key or wrench for working the device.

When the crank is in position shfiwn in fig. 6 thechased will be held firmly against the bechf.

When the crank is tuined to the rig/ht the chase will berelieved, the clamp -turning'on its pivot, c.

What I claim as my invention, and desire tosecure Witnesses:

L. O. MONEAL, E. D. Tnoms. 

